(CBSNews.com) - Subway made news earlier in February when the sandwich chain announcedit was removing a chemical called azodicarbonamide (ADA), which is used to make yoga mats, from North American formulations of bread. But now, a consumer advocacy group is warning people that almost 500 more food items on the market have this same compound.

TheEnvironmental Working Group (EWG)released a list Thursday of all the foods that have listed ADA as an ingredient. Large companies like Ball Park, Country Hearth, Jimmy Dean, Kroger, Little Debbie, Marie Callendar's, Nature's Own, Pillsbury, White Castle and Wonder are just a fraction of the 130 brands that used the chemical in their products. Most of the items are bread, croutons, pre-made sandwiches and snacks.